Fluke (Biomedical) Raysafe 452 Survey Meter

Ambient Dose Equivalent

Range: 0 µSv/h – 1 Sv/h (0 µrem/h – 100 rem/h)

Rate resolution: 0.01 µSv/h (1 µrem/h) or 3 digits

Dose resolution: 0.1 nSv (0.01 µrem) or 3 digits

Energy range: 16 keV – 7 MeV

Air Kerma, Kair

Range: 0 µGy/h – 1 Gy/h (0 µR/h – 114 R/h)

Rate resolution: 0.01 µGy/h (1 µR/h) or 3 digits

Dose resolution: 0.1 nGy (0.01 µR) or 3 digits

Energy range: 30 keV – 7 MeV

Mean photon energy, Ē

Range: 20 keV – 600 keV

Uncertainty: 10 % at < 100 keV, 20 % otherwise

Defining standard: ISO 4037-1:2019

Minimum dose rate(5): 20 µSv/h (2 mrem/h) or 20 µGy/h (2.3 mR/h), at T < 30 °C (86 °F)

Counter (α, β, γ)

Detector type: Geiger-Müller pancake

Window: Mica, 1.5 – 2 mg/cm2

Sensitive area: 15.55 cm2, behind 79 % open steel grid

Range: 0 cps – 20 kcps (0 cpm – 1.2 Mcpm)

Rate resolution: 0.1 cps (1 cpm) or 3 digits

Counter resolution: 1 count or 3 digits

Dead time correction : Automatic, linearity within -10% – +30%

Typical background at 0.1 µSv/h: 0.5 cps (30 cpm)

Typical gamma sensitivity, 137Cs: 6 cps / µGy/h (3000 cpm / mR/h)

Rate response time: Approximately 2 s to detect a step from 1 to 10 cps (60 to 600 cpm)

Units: cps, and cpm (1 cpm = 1/60 cps)

Dimensions 250 x 127 x 83 mm (9.8 x 5.0 x 3.3 inches)

Weight 0.8 kg (1.7 pounds)

Display 240 x 400 pixel backlit color LCD, sunlight readable

Rate alarm 65 dB(A) at 30 cm (12 inches)

Operating temperature -20 – 50 °C (-4 – 122 °F)

Storage temperature -30 – 70 °C (-22 – 158 °F)

Battery charging temperature 10 – 40 °C (50 – 104 °F)

Atmospheric pressure 70 – 107 kPa, altitude up to 3000 m (10,000 ft)

IP code IP64 (dust proof and water resistant) according to IEC 60529:1989- 2013, with lid mounted, seals intact and nothing connected to the USB connector

Humidity, without lid < 90 % relative humidity, non-condensing

Battery Built-in rechargeable lithium-ion, 2550 mAh

Battery life Up to 100 h

Connector USB micro (5 V DC, 1.3 A), for communication and charging

Mounting Standard 1/4” tripod thread on handle

Data storage 4000 stored measurements and 10 days of dose rate log with 1 s resolution

Software RaySafe View (for remote control, analysis and data export)

Datasheet